I needed to replace my shore power cables as they are old, ratty and corroded so I decided as I was buying new cables (2X30amp) anyway that I would go with Smart Plugs©. I bought two 30A cables and 2 inlets from Shore Power Cords - Marine Electrical Connectors - Smart Plug Only
as I found their price to be the lowest. Easy install and very well made product.
If you would like more reason as to why you should upgrade to the SP this is a great place to start.
Shore Power Cords - SmartPlug vs. 1938 Photo Gallery by Compass Marine How To at pbase.com
For the already informed I apologize for the post but as new folks show up all the time I thought some information regarding safety would be helpful.
I also found great price on shore power cables if you need any at 30A Marine Shore Power Cords
I purchased a 25' 50Amp and a 15"50Amp as well as a Y connector from them ,fast and free shipping and about half what marine stores charge.
Just passing on information, I have no connection with any of the above.
Have a fun and safe Summer folks!!